package com.summer.servlet;

import com.summer.pojo.Person;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;

/**
 * 作者:夏天
 * qq:1205232048
 */
public class SessionDemo01 extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        //解决乱码问题
        req.setCharacterEncoding("utf-8");
        resp.setCharacterEncoding("utf-8");
        resp.setContentType("text/html;charset=utf-8");

        //得到session
        HttpSession session = req.getSession();

        //给session中存东西
        session.setAttribute("name", new Person("夏天",22));

        //获取session的ID
        String sessionId = session.getId();

        //判断Session是不是新创建
        if(session.isNew()){
            resp.getWriter().write("session创建成功,ID" + sessionId);
        }else {
            resp.getWriter().write("session创建在服务器中存在了,ID" + sessionId);
        }

        //session创建的时候做了什么事情
        //Cookie cookie = new Cookie("JSESSIONID",sessionId);
        //resp.addCookie(cookie);
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doGet(req, resp);
    }
}
